Butt-en down the hatches, because the music world is currently experiencing an avalanche of ass.

Since the start of the year, songs honoring rotund rumps have occupied every crevice of the chart: J.Lo and Pitbull have their new single “Booty,” Jason Derulo hit it big with “Wiggle” and Nicki Minaj has taken the homage full-circle with her new single “Anaconda” — which samples Sir Mix-a-Lot’s 1992 Billboard No. 1 “Baby Got Back.” The video also emerged this week and features an almost obscene amount of jiggling, as well as Minaj lap dancing for Drake.

“When I heard she wanted to use my track, I immediately gave it the thumbs up,” Mix (real name: Anthony Ray) tells The Post. “I was happy to let her do it because I really think she’s the Madonna of our era.”

The current derriere obsession is a far cry from Sir Mix-a-Lot’s days. “If you go back to the early 1990s, the only women you’d see in music videos looked like heroin addicts,” he says. “It’s not just something that African-American males love anymore, it’s a part of Americana.”

‘Baby Got Back’ by Sir Mix-a-Lot (1992)

He wasn’t the first to vocalize a love for the large behind, but Sir Mix-a-Lot was the first to bring it to the masses. The track’s brazen lyrics caused a minor scandal at the time — but in the 22 years since, the song’s become entrenched in pop culture; it was even given a recent orchestral makeover by the Seattle Symphony Orchestra.Most ridiculous lyrics: “My anaconda don’t want none/Unless you’ve got buns, hon.”

‘Fat Bottomed Girls’ by Queen (1978)

Queen released their salute to big asses in the late 1970s. If the lyrics didn’t drive home the song’s message, the naked woman riding a bicycle on the single’s cover did.Most ridiculous lyrics: “Left alone with big fat Fanny, she was such a naughty nanny/Big woman, you made a bad boy out of me!”

‘Bootylicious’ by Destiny’s Child (2001)

Destiny’s Child gave the subject real class with this funky, Stevie Nicks-sampling hit single. The song made the term “bootylicious” so popular, it was added to the Oxford English Dictionary in 2004.Most ridiculous lyrics: “I’m hoping you can handle all this jelly that I have/So let’s cut a rug while we scat some jazz.”

‘My Humps’ by Black Eyed Peas (2005)

If you happen to be in a band with Fergie, it makes perfect sense to write a song about her famously superior posterior. The electro-hip-hop banger also found a second wind through parodies by Peaches and Alanis Morissette.Most ridiculous lyrics: “I’ma get, get, get, get you drunk/Get you love drunk off my hump.”

‘Honky Tonk Badonkadonk’ by Trace Adkins (2005)

Even country music has embraced the butt. Adkins’ tongue-in-cheek hit was penned by songwriters Jamey Johnson, Dallas Davidson and Randy Houser, who were inspired by watching a girl shaking her moneymaker in a club. The trio then came up with the song within an hour. Shocking.Most ridiculous lyrics: “Get the sheriff on the phone/Lord have mercy, how’d she even get them britches on.”

‘Wiggle’ by Jason Derulo featuring Snoop Dogg (2014)

The ass cannon has a new addition thanks to the Miami rapper and his fellow booty-hound Snoop Dogg. But despite the fact that this hit song has reignited Derulo’s career, he recently told Rolling Stone that he doesn’t want to sing about big behinds anymore. Bummer.Most ridiculous lyrics: “Patty-cake, patty-cake, with no hands/Got me in this club making wedding plans.”